I just purchased my first laptop computer, a Dell InspironN5050 and so far, have been unable to find any information about using the ACadapter and also about charging the battery in the user manual. Since this ismy first time using a computer with a battery, I have several questions.

The specs say that the battery in my computer is a 6 cell, 48 Watt primary battery. When I first received the computer and turned it on(running only on the battery at the time), the battery ran down to the pointwhere the computer would not operate until battery charged in about 2.5 hours.I assumed that this was because it may have not been fully charged when leavingthe factory or if it had been, the charge may have diminished slightly fromsitting around before and during shipping.

My first question is how long should I expect this unit tooperate from the time the battery is fully charged until it runs down to thepoint where it needs to be recharged?

Also, the AC adapter which was shipped with the computer isa 65 Watt, 3 prong adapter, Dell part number MH4Y4. How long should I expectthis adapter to take to fully charge the battery on this system?

Finally, I noted a number of AC adapters listed for saleseparately on the Dell site, some of them up to 90 Watt. Most if not all ofthem say that these adapters permit using the computer via AC power at the sametime that the battery is charging. Can I expect the 65 Watt adapter which camewith the computer to provide this capability of simultaneously charging whileoperating the computer? I can’t find anything in the information provided withthe computer or online which discusses this.

Also, is there any benefit to getting a 90 Watt adapterinstead of using the 65 Watt one which came with my computer? Thanks in advancefor any help.